Gürel, KamilSanal, S. K.Gürel, SafiyeKalfaoğlu, Melike ElifBoran, Çetin2021-06-232021-06-2320090250-832X1476-542Xhttps://doi.org/10.1259/dmfr/33360963https://hdl.handle.net/20.500.12491/6448Because of the close anatomical relationship between the maxillary sinus and the adjacent dental region, determining the primary site of cysts in these regions can be a diagnostic dilemma. In this article, two cases with similar radiological findings are presented. These cases had lesions involving the maxillary sinus and the adjacent alveolar process; the lesions were surrounded with egg-shaped, linear opacities. Diagnoses of a residual radicular cyst in one case and a calcified mucocoele (which is very rare) in the other case were predicted with the help of radiological findings and were confirmed surgically and histopathologically. Dentomaxillofacial Radiology (2009) 38, 296-300. doi: 10.1259/dmfr/33360963eninfo:eu-repo/semantics/closedAccessOdontogenic CystsRadicular CystMaxillary SinusMucocoeleEgg ShellArticle10.1259/dmfr/33360963385296300194742582-s2.0-67649573940Q1WOS:000268560600008Q3